Air filtering structure suitable for high-voltage electrostatic sterilization and air filter

Abstract

The utility model provides an air filter structure and air filter suitable for high voltage static disinfection, including corrugated filter material and high voltage generation device, filter material is composed of skeleton layer, conducting medium and composite layer, conducting medium is evenly distributed in skeleton layer, and the conducting medium and composite layer melt-blow compound form conducting surface. The high-voltage electrostatic field is uniformly distributed on the whole filtering material, bacteria and viruses are subjected to electrostatic sterilization, the filtering efficiency is enhanced, the service life is prolonged, additional assembly procedures are not needed, and time and labor force are saved.

Description

Technical Field

[0001] This utility model relates to the technical field of filtration equipment, and in particular to an air filtration structure and air filter suitable for high-voltage electrostatic sterilization. Background Technology

[0002] Pre-existing air filtration devices, such as fiberglass filters, meltblown electret filters, and polytetrafluoroethylene (PTFE) membrane filters, typically employ a folded, corrugated design to increase the filtration area and material usage, thereby extending their service life and improving airflow efficiency. This design effectively reduces replacement frequency and lowers user maintenance costs.

[0003] However, as the lifespan of air filtration devices increases, a new problem arises after long-term use: due to the lack of filter replacement for extended periods, a large number of microorganisms may accumulate inside the filter media. These microorganisms can multiply under suitable conditions, potentially causing secondary pollution and thus affecting the air purification effect.

[0004] To address this challenge, existing technologies have proposed a method that adds electrode strips to the surface of the filter material and generates an electrostatic field using a high-voltage power supply during operation to kill microorganisms such as bacteria and viruses. While this method provides a solution to some extent, it still has significant shortcomings:

[0005] 1. The electrode strips have a limited coverage area, making it difficult to form a uniform electric field across the entire filter material, which limits the disinfection effect;

[0006] 2. The process of installing electrode strips is complicated, adding extra assembly steps and consuming time and labor.

[0007] In view of this, the inventors have specifically designed an air filtration structure suitable for high-voltage electrostatic disinfection, which leads to this invention. Summary of the Invention

[0008] To solve the above problems, one of the technical solutions of this utility model is as follows:

[0009] An air filtration structure suitable for high-voltage electrostatic sterilization includes:

[0010] Filter material, which is a sheet-like structure folded into a corrugated shape, is used to filter impurities in the air flowing over its surface;

[0011] A high-voltage generator has an output terminal;

[0012] The filter material includes a skeleton layer, a conductive medium, and a composite layer. The conductive medium is uniformly distributed in the skeleton layer. One side of the skeleton layer is melt-blown bonded to the composite layer so that the other side forms a conductive surface. The output end of the high-voltage generator is electrically connected to the conductive surface of the skeleton layer.

[0013] Preferably, the high-voltage generating device includes a DC high-voltage power supply, and the output terminal of the DC high-voltage power supply is electrically connected to the filter material through a wire.

[0014] Preferably, the high-voltage generating device is a unipolar DC high-voltage power supply.

[0015] Preferably, the skeleton layer is a PET skeleton.

[0016] Preferably, the conductive medium is conductive fiber or PET fiber with a conductive electroplated layer.

[0017] Preferably, the conductive fiber is carbon fiber or metal fiber.

[0018] Preferably, the composite layer is a meltblown fabric layer.

[0019] Preferably, the voltage of the high-voltage generating device is DC 500V to 20000V or -500V to -20000V.

[0020] The second technical solution of this utility model is as follows:

[0021] An air filter includes a frame and an air filtration structure disposed within the frame.

[0022] The manufacturing process of the air filter structure is as follows:

[0023] Step 1: Prepare the PET skeleton fabric to serve as the skeleton layer, and cut it to an appropriate length;

[0024] Step 2: Evenly add conductive fibers to the PET skeleton fabric material so that the entire material can conduct electricity evenly and fully. At this time, conductive surfaces are formed on both the top and bottom sides of the PET skeleton fabric.

[0025] Step 3: Meltblown composite polypropylene meltblown fabric layer is applied to the upper surface of the PET skeleton fabric with added conductive fibers so that the lower end face of the PET skeleton forms a conductive surface.

[0026] Step four: Fold the composite material from step three into a corrugated structure with continuously distributed concave and convex peaks to form a complete filter material;

[0027] Step 5: Connect the conductive surface of the folded filter material from Step 4 to the conductive contact of the high-voltage generator. The high voltage generated by the high-voltage generator will electrify the entire filter material, forming an electric grid. The high-voltage electric field will then be used to achieve the desired sterilization effect.

[0028] The beneficial effects of this utility model are as follows:

[0029] This invention adds a conductive medium to the skeleton layer and combines a composite layer on the surface of the skeleton layer, thereby forming a uniform conductive surface on the surface of the entire skeleton layer away from the composite layer. An external high-voltage generator creates a high-voltage electric field on the surface of the entire filter material, electrostatically disinfecting bacteria, viruses and other microorganisms remaining on the surface of the filter material. This enhances filtration efficiency and increases the service life of the entire filter structure.

[0030] In addition, the filter material can achieve a conductive effect after being integrally composited, without the need for additional assembly processes, thus saving time and labor. Attached Figure Description

[0031] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0032] in:

[0033] Figure 1 This is an exploded structural diagram of Embodiment 1 of this utility model;

[0034] Figure 2 This is a schematic diagram of the overall structure in the folded state of Embodiment 1 of this utility model;

[0035] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model.

[0036] Label Explanation:

[0037] 100, Filter material; 101, Peak; 200, Skeleton layer; 300, Conductive medium; 400, Composite layer; 500, High voltage generator; 501, Conductor; 600, Frame. Detailed Implementation

[0038] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model. Example

[0039] Please see Figures 1 to 2 This is a preferred embodiment of an air filtration structure suitable for high-voltage electrostatic sterilization, comprising a filter material 100 and a high-voltage generator 500, wherein:

[0040] like Figure 1 , 2As shown, the filter material 100 is formed by folding a sheet structure into a corrugated shape, and is used to filter impurities in the air flowing over its surface;

[0041] Specifically, the filter material 100 includes, from bottom to top, a skeleton layer 200, a conductive medium 300, and a composite layer 400. The conductive medium 300 is evenly distributed on the skeleton layer 200. One side of the skeleton layer 200 is melt-blown bonded with the composite layer 400 so that the other side forms a conductive surface (distributed on the lower end face of the skeleton layer 200, not shown in the figure). The output end of the high-voltage generator 500 is electrically connected to the conductive surface of the skeleton layer 200.

[0042] In this embodiment, the skeleton layer 200 is a PET skeleton, the conductive medium 300 is a conductive fiber, and the composite layer 400 is a polypropylene meltblown fabric layer.

[0043] Furthermore, the conductive fiber can be made of carbon fiber or metal fiber; in this embodiment, it is specifically carbon fiber.

[0044] like Figure 1 As shown, the high-voltage generator 500 has an output terminal, which is a conductive contact (not shown in the figure).

[0045] Preferably, the high-voltage generator 500 is a unipolar DC high-voltage power supply. The conductive contacts of the DC high-voltage power supply are electrically connected to the conductive surface of the filter material 100 through the wire 501, thereby connecting the unipolar DC high-voltage power supply to the conductive surface of the frame. When the DC high-voltage power supply is turned on, the generated high voltage is transmitted to the entire surface of the frame through the wire 501 and conductive fibers, that is, it is completely distributed on the surface of the filter material 100, thereby enabling the entire filter material 100 to be charged, forming a grid state, and achieving the sterilization effect through the high-voltage electric field.

[0046] Preferably, the DC high-voltage power supply is a high-voltage generator, which uses a single-pole voltage input.

[0047] In this embodiment, the voltage of the high-voltage generator 500 is DC 500V to 20000V or -500V to -20000V.

[0048] Specifically, in this embodiment, the manufacturing process of the air filter structure is as follows:

[0049] Step 1: Prepare the PET skeleton fabric (200mm) as the skeleton layer and cut it to an appropriate length.

[0050] Step 2: Evenly add conductive fibers to the PET skeleton fabric material so that the entire material can conduct electricity evenly and fully. At this time, conductive surfaces are formed on both the top and bottom sides of the PET skeleton fabric.

[0051] Step 3: Meltblown composite polypropylene meltblown fabric layer is applied to the upper surface of the PET skeleton fabric with added conductive fibers so that the lower end face of the PET skeleton forms a conductive surface.

[0052] Step four, fold the composite material from step three into a corrugated structure with continuously distributed concave and convex peaks 101 to form a complete filter material 100.

[0053] Step 5: Connect the conductive surface of the folded filter material 100 from Step 4 to the conductive contact of the high-voltage generator. Use the high voltage generated by the high-voltage generator to electrify the entire filter material 100, forming an electric grid state. The high-voltage electric field will then achieve the corresponding sterilization effect. Example

[0054] Please see Figure 3 This is an air filter as a second embodiment of the present invention, including a frame 600 and an air filter structure as in the first embodiment disposed in the frame 600.

[0055] Specifically, the frame 600 serves as the installation base for the entire air filter. Its overall shape is generally a square frame 600, with a hollowed-out area in the middle to install and fix the corrugated folded air filter structure. The edges of the air filter structure are sealed to the inside of the frame 600, so that the air entering the frame 600 can only be filtered through the filter structure. The frame 600 has reserved installation space for the high-voltage generator to be installed, and its conductive contacts are connected to the conductive surface of the frame. The high-voltage generator is driven by an external power supply or a built-in battery to generate the corresponding high-voltage effect. Example

[0056] An air filtration structure suitable for high-voltage electrostatic sterilization differs from Embodiment 1 in that the conductive medium 300 is PET fiber with a conductive electroplating layer.

[0057] Specifically, a conductive electroplating layer (not shown in the figure) is set on the surface of the PET fiber, so that the entire PET fiber forms a conductive fibrous structure. On the one hand, it can achieve the corresponding conductivity effect, so that the entire filter material is 100% uniformly charged. On the other hand, it can also reduce costs through PET fibers, making the entire air filtration structure more economical.

[0058] The beneficial effects of this utility model are as follows:

[0059] This invention adds a conductive medium 300 to the skeleton layer 200 and combines a composite layer 400 on the surface of the skeleton layer 200, thereby forming a uniform conductive surface on the surface of the entire skeleton layer 200 away from the composite layer 400. An external high-voltage generator 500 forms a high-voltage electric field on the surface of the entire filter material 100, which electrostatically kills bacteria, viruses and other microorganisms remaining on the surface of the filter material 100. This not only enhances the filtration efficiency but also increases the service life of the entire filter structure.

[0060] In addition, the filter material can achieve a conductive effect after being integrally composited, without the need for additional assembly processes, thus saving time and labor.

[0061] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. An air filtration structure suitable for high-voltage electrostatic disinfection, characterized in that, The application relates to an air filter structure, comprising: a filter material (100) formed by folding a sheet structure into a corrugated shape for filtering impurities in air flowing through the surface of the filter material; a high-voltage generating device (500) having an output end; wherein the filter material (100) comprises a skeleton layer (200), a conductive medium (300) and a composite layer (400), the conductive medium (300) is uniformly distributed in the skeleton layer (200), one side of the skeleton layer (200) is fused and sprayed with the composite layer (400) to form a conductive surface on the other side, and the output end of the high-voltage generating device (500) is electrically connected to the conductive surface of the skeleton layer (200).

2. The air filtration structure according to claim 1, wherein, The high-voltage generating device (500) comprises a direct-current high-voltage power supply, and the output end of the direct-current high-voltage power supply is electrically connected to the filter material (100) through a wire (501).

3. The air filtration structure according to claim 1, wherein, The high-voltage generating device (500) is a single-pole direct-current high-voltage power supply.

4. The air filtration structure according to claim 1, wherein, The skeleton layer (200) is a PET skeleton.

5. The air filtration structure according to claim 1, wherein, The conductive medium (300) is a conductive fiber or a PET fiber with a conductive electroplated layer.

6. The air filtration structure according to claim 5, wherein, The conductive fiber is a carbon fiber or a metal fiber.

7. The air filtration structure according to claim 1, wherein, The composite layer (400) is a melt-blown cloth layer.

8. The air filtration structure according to claim 1, wherein, The voltage of the high-voltage generating device (500) is direct current 500V to 20000V or negative 500V to negative 20000V.

9. An air filter, characterized by The application further relates to an air filter structure comprising a frame (600) and the air filter structure as claimed in any one of claims 1 to 8 arranged in the frame (600).

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